Tag Archives: stars

A wobble reveals the most massive stellar black hole in our galaxy

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. Astronomers have discovered the most massive known stellar black hole in the Milky Way galaxy after detecting an unusual wobble in space. The so-called ‘sleeping giant’, called Gaia BH3, has a mass almost 33 times… Read More »

Monster star gets magnetic personality after star merger

Massive stars gain their magnetism by colliding and merging with other stars, according to evidence from a bizarre binary system surrounded by a dusty, element-rich nebula. Within that bipolar nebula, which has the dual designation NGC 6164/6165, is the star system HD 148937. light years further out, in the constellation Norma in the Southern Hemisphere,… Read More »

Hubble Space Telescope finds a bucket of cosmic Easter eggs: 500 blue and red stars

In December 2023, the Hubble Space Telescope completed its largest program since its launch in 1990. With this program, the telescope made observations of 500 individual stars over three years – and scientists are now ready to dive into this cosmic Easter egg of data. The comprehensive Hubble Telescope survey is called the Ultraviolet Legacy… Read More »

Hubble Space Telescope discovers ‘failed stars’ are also bad at relationships

You have to have a feeling for brown dwarfs. Not only has their inability to ignite like normal stars earn them an unfortunate nickname: failed stars, but new findings from the Hubble Space Telescope have revealed that they can’t even sustain a relationship. Brown dwarfs are celestial bodies that form when giant clouds of gas… Read More »

‘Singing’ red giant stars could be another way to measure the expansion of the universe

In about 5 billion years, the fuel needed for nuclear fusion in the sun’s core will run out. This will cause the inner core to collapse under the force of the sun’s gravity. At this point, the star’s outer layers (where nuclear fusion is still taking place) will expand and it will enter a phase… Read More »

Some ‘dead’ stars hide celestial fountains of youth beneath their surfaces

White dwarfs are the stars left behind when stars like the Sun “die” and smolder in space as cooling stars glow. Recent observations have shown that some of these stellar corpses may even take longer to cool than previously expected. This means that white dwarfs may have a way to generate energy after their ‘death’,… Read More »

James Webb Space Telescope reveals how stellar radiation explosions hinder planet birth

Astronomers have used the James Webb Space Telescope to investigate a stellar nursery full of young stars in the Orion Nebula. The research helped reveal the effect that radiation from massive stars has on planet formation. The Orion Nebula is a huge complex of gas and dust that forms the building blocks of new stars.… Read More »

These supernovae create a storm and contribute to cosmic life and death

Astronomers have discovered a previously unknown source of cosmic dust. Why is it important to detect this dust? Well, these particles actually act as building blocks for stars. The international team found that such dust can be created by a type of cosmic explosion that occurs when a dead white dwarf star removes material from… Read More »

Millions of stars glow in the Webb Telescope’s unprecedented portrait of spiral galaxies

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. The James Webb Space Telescope has captured dazzling portraits of 19 spiral galaxies – and the millions of stars that call them home – in unprecedented detail never before seen by astronomers. Webb’s unique ability… Read More »